完成句子1三年前，是那位英语老师鼓励我哥哥再次尝试的。(强调主语)_ the English teacher _ encouraged my brother to try again three years ago.答案：It was; that/who2到他大学毕业的时候，他的家乡已经发生了巨大的变化。(by)_ from college, great changes had taken place in his hometown.答案：By the time he graduated3直到比赛结束他才回家。(强调句型)It was _ the game was over that he got home.答案：not until4她虽然是一个可爱的姑娘，但有时很难与她共事。(while)_， she can be extremely difficult to work with sometimes.答案： While she is a lovely girl
